49687240121 has 4 divisors (see below), whose sum is σ = 49939459812. Its totient is φ = 49435020432.

The previous prime is 49687240117. The next prime is 49687240123. The reversal of 49687240121 is 12104278694.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 46683652096 + 3003588025 = 216064^2 + 54805^2 .

It is a cyclic number.

It is not a de Polignac number, because 49687240121 - 2² = 49687240117 is a prime.

It is not an unprimeable number, because it can be changed into a prime (49687240123) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 126109550 + ... + 126109943.

It is an arithmetic number, because the mean of its divisors is an integer number (12484864953).

Almost surely, 2^49687240121 is an apocalyptic number.

It is an amenable number.

49687240121 is a deficient number, since it is larger than the sum of its proper divisors (252219691).

49687240121 is a wasteful number, since it uses less digits than its factorization.

49687240121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 252219690.

The product of its (nonzero) digits is 193536, while the sum is 44.

The spelling of 49687240121 in words is "forty-nine billion, six hundred eighty-seven million, two hundred forty thousand, one hundred twenty-one".